# Copyright 2020 JD.com, Inc. Galileo Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================

from galileo.platform.export import export

from .backend import (
    is_pytorch,
    is_tf,
    set_backend,
)


@export('galileo.unify')
def api(**kwargs):
    backend = kwargs.get('backend')
    if backend is not None:
        set_backend(backend)
    if is_tf():
        import galileo.framework.tf as m
    elif is_pytorch():
        import galileo.framework.pytorch as m
    else:
        raise RuntimeError('Only support backend tf or pytorch')
    return m

